This is where you can post your Commander Keen related stories, artwork, or other stuff that is related to Commander Keen but otherwise doesn't belong in another forum.
Reading about space exploration on Wikipedia, as one does on a Saturday night.
Learned of the YORP effect (Yarkovsky–O'Keefe–Radzievskii–Paddack). Though coined in 2000 apparently, I see no sign of it being a Keen reference. It might be, though...
In my math lecture, it told me to find the numbers matching the values for a, b, and c, and I put in 3, 1, 4! Therefore, Teaching Textbooks Algebra 2 is a Keen reference.
Put me in a room full of chlorine. Results: I die and turn into a pillar of salt and a very buggy Keen 6.